All kidding aside, you should get a good price for a newer Tour on Ebay.Then you can pay off the new Storm 2 with the proceeds.
I have sold all my old Blackberry devices on Ebay, and usually make enough to pay for most of the new one.
I do this kind of thing all the time. I ported from AT&T to Sprint to get the Palm Pre. Love it, but after about 2 or 3 weeks I found I just missed my BlackBerry too much. So I bought a Curve 8330m. About 2 weeks after that Sprint released the Tour. So I bought it and re-sold my Curve. It's been a pattern with me and mobile phones for many years. So much so I no longer even try to justify my purchased. I just do it.